Ideal Gases

Question 1

What is thermal equilibrium

Answer 1

Is when energy is transferred from a region of temp to a region of low temp

When two objects are in contact with each other and they are of the same temp there is no net energy transfer

Question 2

Kelvin to Celsius and why kelvin

Answer 2

0c =273k

Celsius scale is based on boiling and freezing points of water which depend on pressure

Question 3

Solid

Answer 3

Particles vibrate in a fixed ordered lattice if the temperature increases the amplitude of the vibrations increase and the space between particle is small

Question 4

Liquids

Answer 4

Particles can flow past each other. They are vibrating but not in fixed positions. Pacing between the particles is slightly larger

Question 5

Gas

Answer 5

The particles are far apart. They don’t exert force on each other except duron collisions. They move in random linear motion

Question 6

Internal energy

Answer 6

The sum of kinetic and potential energies of all the particles of a substance

Question 7

Shc41

Answer 7

Is the energy required to to raise the temperature to raise 1kg of a substance by 1k

E=Mcd○

Question 8

Shc equation check galleryop

Question 9

Slh equation

Answer 9

E=ml or latent heat=energy/mass

Question 10

What is a mole

Answer 10

The amount of substance which contains the same number of particles as there are atoms In 12g of carbon 12

Question 11

Number of mass

Answer 11

Mass/molar mass

Question 12

Kinetic theory assumptions

Answer 12

1) large number of particles in rapid random motion

2)individual particles occupy a negligible volume compared to the volume of the gas

3)all collisions are perfectly elastic and the time spent in collisions is negligible compared to the time spent between collisions

4)negligible foces between particles(no intermolecular forces) except during collision

Question 14

Gas laws equation

Answer 14

pV=nRT pV=NkT

R is gas law const
n is number of moles
N I’d number of particle
K is boltzmann constant

Question 16

1)Boyles law
2)charles law
3)gay-lussacs law

Answer 16

For fixed amount of gas

1) t is const p is inversely proportional to v

2)p is const v is proportional is proportional to temp

3)v is const p is directly proportional temp

Question 17

Pressure in terms of the kinetic model

Answer 17

Particles collide with walls aland it will exert a force on them as the particles.havw a change in momentum, newtons third law we the particles will exert and equal and opposite force and pressure is f/a and with so many collisions taking place we can assume that sigmaf/a =pressure